ㅤㅤㅤㅤㅤㅤㅤ❖Fullscreen Recommended❖ㅤㅤㅤㅤ -----------------------------❖ How it Works ❖-------------------------- The odds of a number being divisible by 7, 11, and 13 is 1001 because 7*11*13 = 1001. Duplicating your number is the same as multiplying it by 1001, so it will be divisible by 7, 11, and 13. Since 1001 is made of 7, 11, and 13, you'll be left with your original number. 123 * 7 * 11 * 13 is essentially the equation. ------------------------------❖ Credits ❖----------------------------------- I saw this trick in a math book I have. It didn't fully explain how it works, so I tried to explain it. Please correct me if I'm wrong. ------------------------------❖ Tags ❖-------------------------------------- #math #magic #mathemagic #fun #all #trending #trick